Yángyuán

Yangyuan was a Tang county in the mountain country south of the Han River, within Yangzhou's jurisdiction. It was separated from Xixiang in the early Tang, with its seat in the region of Zhenba. Warfare later disrupted the county, and its administration was temporarily moved to Baituan, south of Xixiang. The county was abolished in the early ninth century. Its changing seat reflects the difficulties of governing the wooded valleys between the Hanzhong basin and the mountains to the south.